我遇到了一个错误，我花了 2 个小时尝试找出问题所在，但仍无法修复。
我使用 java -jar 命令运行了我的 spring boot 应用程序，它是一个包，无法启动。
我设置了属性文件来设置 80 端口，并且我的firewalld 被禁用，并且我在 centos7 机器上运行。我尝试了 netstat 命令，但端口 80 没有服务，所以我认为这不是端口问题。
这是错误日志：
2019-01-21 16:02:56.183 INFO 8158 --- [ main] com.springboot.PjsSpringBootApplication : Starting PjsSpringBootApplication v1.0 on carpfishncptest1 with PID 8158 (/home/jh31/pjs-spring-boot/target/pjs-spring-boot-1.0.jar started by jh31 in /home/jh31/pjs-spring-boot/target)
2019-01-21 16:02:56.186 INFO 8158 --- [ main] com.springboot.PjsSpringBootApplication : No active profile set, falling back to default profiles: default
2019-01-21 16:02:57.702 INFO 8158 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 80 (http)
2019-01-21 16:02:57.729 INFO 8158 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2019-01-21 16:02:57.730 INFO 8158 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.14]
2019-01-21 16:02:57.740 INFO 8158 --- [ main] o.a.catalina.core.AprLifecycleListener : The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: [/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib]
2019-01-21 16:02:57.812 INFO 8158 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2019-01-21 16:02:57.813 INFO 8158 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1571 ms
2019-01-21 16:02:58.056 INFO 8158 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'
2019-01-21 16:02:58.174 WARN 8158 --- [ main] o.s.b.a.m.MustacheAutoConfiguration : Cannot find template location: classpath:/templates/ (please add some templates, check your Mustache configuration, or set spring.mustache.check-template-location=false)
2019-01-21 16:02:58.192 INFO 8158 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page: class path resource [static/index.html]
2019-01-21 16:02:58.277 ERROR 8158 --- [ main] org.apache.catalina.util.LifecycleBase : Failed to start component [Connector[HTTP/1.1-80]]
org.apache.catalina.LifecycleException: Protocol handler start failed
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1004) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.catalina.core.StandardService.addConnector(StandardService.java:226) [tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:259) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:197) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.startWebServer(ServletWebServerApplicationContext.java:311) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:164) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) [spring-context-5.1.4.RELEASE.jar!/:5.1.4.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:316) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1260) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1248) [spring-boot-2.1.2.RELEASE.jar!/:2.1.2.RELEASE]
at com.springboot.PjsSpringBootApplication.main(PjsSpringBootApplication.java:10) [classes!/:1.0]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_201]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_201]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_201]
at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) [pjs-spring-boot-1.0.jar:1.0]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:87) [pjs-spring-boot-1.0.jar:1.0]
at org.springframework.boot.loader.Launcher.launch(Launcher.java:50) [pjs-spring-boot-1.0.jar:1.0]
at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:51) [pjs-spring-boot-1.0.jar:1.0]
Caused by: java.net.SocketException: Permission denied
at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_201]
at sun.nio.ch.Net.bind(Net.java:433) ~[na:1.8.0_201]
at sun.nio.ch.Net.bind(Net.java:425) ~[na:1.8.0_201]
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[na:1.8.0_201]
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74) ~[na:1.8.0_201]
at org.apache.tomcat.util.net.NioEndpoint.initServerSocket(NioEndpoint.java:236) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:210) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1085) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1171) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:568) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
at org.apache.catalina.connector.Connector.startInternal(Connector.java:1001) ~[tomcat-embed-core-9.0.14.jar!/:9.0.14]
... 22 common frames omitted
2019-01-21 16:02:58.282 INFO 8158 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2019-01-21 16:02:58.292 INFO 8158 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2019-01-21 16:02:58.293 ERROR 8158 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :
***************************
APPLICATION FAILED TO START
***************************
Description:
The Tomcat connector configured to listen on port 80 failed to start. The port may already be in use or the connector may be misconfigured.
Action:
Verify the connector's configuration, identify and stop any process that's listening on port 80, or configure this application to listen on another port.
2019-01-21 16:02:58.296 INFO 8158 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'
答案1
1024 以下的端口仅限 root 用户使用。请尝试以 root 身份运行您的 jar。
如果您在 Tomcat 上运行应用程序，那么 Tomcat 需要 root 权限才能打开端口 80。